A tool for easy online testing and sharing of database problems and their solutions.

SymmetricDS is open source software for multi-master database replication, filtered synchronization, or transformation across the network in a heterogeneous environment. It supports multiple subscribers with one direction or bi-directional asynchronous data replication. It uses web and database technologies to replicate tables between relational databases, in near real time if desired. The software was designed to scale for a large number of databases, work across low-bandwidth connections, and withstand periods of network outage.

EasyQuery.NET WPF edition lets your users get the data they want without any assistance from the developer. This outstanding solution allows users to create queries to your database using a friendly graphical interface which looks to them as just a statement in their native language. EasyQuery.NET library is a set of native .NET classes and components which adds end-user-oriented query builder into your .NET WPF application.

It can be used to stress HTTP, WebDAV, SOAP, PostgreSQL, MySQL, LDAP and Jabber/XMPP servers. Tsung (formerly known as IDX-Tsunami) is a free software released under the GPLv2 license. The purpose of Tsung is to simulate users in order to test the scalability and performance of IP based client/server applications. You can use it to do load and stress testing of your servers. Many protocols have been implemented and tested, and it can be easily extended. WebDAV, LDAP and MySQL support have been added recently (experimental).

As the name suggests, EasyQuery.NET WebForms is a user-friendly solution for building database queries. This ASP.NET query builder will make things easier for the users of your web based ASP.NET applications and with it, they will be able to extract the information from the database that they are specifically looking for. The set of components is also exceptionally easy to use from a developer's viewpoint as well, providing an efficient and reliable solution. New queries simply take a few clicks of the mouse to build.

SQL Relay is a persistent database connection pooling, proxying and load balancing system for Unix and Linux.

Datanamic DataDiff for PostgreSQL is a powerful and easy-to-use PostgreSQL tool for data comparison and synchronization. Compare data for selected tables in two databases, view data differences and publish changes quickly and safely. Flexible comparison and synchronization options allow you to set up a customized comparison key and to select tables and fields for comparison and for synchronization. You can synchronize directly on the PostgreSQL database or generate a synchronization SQL script.

EasyQuery.NET Silverlight edition lets your users get the data they want without any assistance from the developer. This outstanding solution allows users to create queries to your database using a friendly graphical interface which looks to them as just a statement in their native language. EasyQuery.NET library is a set of native .NET classes and components which adds end-user-oriented query builder into your .NET Sliverlight application.

SQLObject is an object-relational mapper for Python. It supports MySQL, PostgreSQL, SQLite, Firebird, MaxDB/SapDB, MS SQL and Sybase. It supports Python versions back to 2.4

PaGoDump is a GUI Windows utility for backing up a PostgreSQL database built with Microolap PostgresDAC. It makes consistent backups even if the database is being used concurrently. PaGoDump does not block other users accessing the database (readers or writers), also it works with databases with any names (unicode) and dump them to any files (unicode again).